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String obfuscator

Obfuscate a string (like a secret, an IBAN, or a token) to make it shareable and identifiable without revealing its content.

How to Use

  1. Step 1: Enter the string you want to obfuscate (e.g. API key, IBAN, token).
  2. Step 2: Set how many characters to keep visible at the start and end.
  3. Step 3: The obfuscated string is shown - safe to share in screenshots or logs.

Frequently Asked Questions

What is string obfuscation?

String obfuscation replaces middle characters with asterisks making secrets partially visible but unrecoverable.

Is obfuscation the same as encryption?

No. Obfuscation is a visual technique - the original string is not recoverable. Encryption produces a reversible ciphertext.

When is string obfuscation useful?

Common uses: logging (hiding API keys and passwords), screenshots and demos (masking sensitive tokens), UI display (showing partial card numbers like **** 1234), error reports (protecting user privacy), and technical documentation (showing example configs without exposing real credentials).

Does string obfuscation truly protect sensitive information in source code?

String obfuscation only increases the difficulty of reverse engineering — it does not truly protect sensitive data. Obfuscated code can still be decompiled and statically analyzed, just taking more time. Real protection: store sensitive config (API keys, DB passwords) in environment variables or a KMS, never in the codebase; use .gitignore and secret scanning tools (e.g., GitHub Secret Scanning) to prevent accidental commits; rotate keys regularly so leaks expire quickly.